Apollo GT Series 3 IN 409 Stainless Steel Cat Back Exhaust System w Universal 304 409 Stainless Steel Exhaust Muffler for Automotive aFe SATURN 4S 409 Stainless Steel Muffler aFe 49 43090 P Large Bore HD 409 SS DPF Back Exhaust System with Ocsun High Quality 409 304 Stainless Steel Material Air Silencer. The Saturn Series Universal fit 409 Stainless Steel Performance Muffler is designed to provide a deep, throaty, powerful sound on acceleration but maintain a smooth sound at idle. This muffler is constructed of brushed finished 409 stainless steel and uses a straight through perforated core with heat resistant packing to reduce back pressure and maximize exhaust flow. You will see increased performance and improved throttle response over the factory exhaust. Muffler Specifications: 4 IN ID Center Center x 8 IN Dia. x 30 IN OAL Round BodyLeak Free Seal: Includes 2 Torca AccuSeal exhaust clamps for a long lasting, secure 360 degree sealing surface. Emissions Disclaimer: This product does not require a CARB EO#